CVE-2020-16126 accountsservice drops ruid, allows unprivileged users to send it signals

2020-11-0300:00:00

CWE-269

canonical

www.cve.org

3.3 Low

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

3.9 Low

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

12.7%

JSON

An Ubuntu-specific modification to AccountsService in versions before 0.6.55-0ubuntu13.2, among other earlier versions, improperly dropped the ruid, allowing untrusted users to send signals to AccountService, thus stopping it from handling D-Bus messages in a timely fashion.

CNA Affected

[
  {
    "product": "accountsservice",
    "vendor": "Freedesktop",
    "versions": [
      {
        "lessThan": "0.6.35-0ubuntu7.3+esm2",
        "status": "affected",
        "version": "0.6.35-0ubuntu7.3",
        "versionType": "custom"
      },
      {
        "lessThan": "0.6.40-2ubuntu11.6",
        "status": "affected",
        "version": "0.6.40-2ubuntu11",
        "versionType": "custom"
      },
      {
        "lessThan": "0.6.45-1ubuntu1.3",
        "status": "affected",
        "version": "0.6.45-1ubuntu1",
        "versionType": "custom"
      },
      {
        "lessThan": "0.6.55-0ubuntu12~20.04.4",
        "status": "affected",
        "version": "0.6.55-0ubuntu",
        "versionType": "custom"
      },
      {
        "lessThan": "0.6.55-0ubuntu13.2",
        "status": "affected",
        "version": "0.6.55-0ubuntu13",
        "versionType": "custom"
      }
    ]
  }
]